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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effect of immersion in distilled water or phosphate-buffered saline on the solubility, volumetric change and presence of voids within new calcium silicate-based root canal sealers

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Author(s):
Torres, F. F. E. [1] ; Zordan-Bronzel, C. L. [1] ; Guerreiro-Tanomaru, J. M. [1] ; Chavez-Andrade, G. M. [1] ; Pinto, J. C. [1] ; Tanomaru-Filho, M. [1]
Total Authors: 6
Affiliation:
[1] Sao Paulo State Univ Unesp, Sch Dent, Dept Restorat Dent, Araraquara - Brazil
Total Affiliations: 1
Document type: Journal article
Source: International Endodontic Journal; OCT 2019.
Web of Science Citations: 0
Abstract

Aim To assess the effect of immersion in distilled water or phosphate-buffered saline (PBS) on the solubility, volumetric change and presence of voids of calcium silicate-based root canal sealers (TotalFill BC, Sealer Plus BC and Bio-C), in comparison with the gold standard epoxy resin-based sealer (AH Plus). Methodology All properties were evaluated after immersion in distilled water or PBS. Solubility was determined by the percentage of mass loss, whereas volumetric change and presence of voids were evaluated by micro-computed tomography, after 7 days of immersion. The volumetric change and percentage of voids between the baseline (after setting) and the experimental period were calculated. Statistical analysis was performed using one-way anova and Tukey's or Student's t-tests (alpha = 0.05). Results The calcium silicate-based sealers had significantly greater solubility and volumetric loss than AH Plus, after immersion in distilled water or PBS (P < 0.05). Bio-C had the greatest solubility (P < 0.05), followed by TotalFill BC and Sealer Plus BC, which were similar (P > 0.05). Regarding the volumetric change, AH Plus had a volume increase, with similar values in distilled water and PBS (P > 0.05). TotalFill BC, Sealer Plus BC and Bio-C had a similar volumetric change (P > 0.05). The calcium silicate-based materials had the greatest solubility and volume loss after immersion in distilled water (P < 0.05). There was no difference in the percentage of voids amongst the sealers, before and after immersion in distilled water or PBS (P > 0.05). Conclusions TotalFill BC, Sealer Plus BC and Bio-C had significantly greater solubility and volumetric loss than AH Plus. Although storage in PBS significantly reduced the solubility and volumetric change of calcium silicate-based sealers, their solubility remained above that recommend by ISO 6876. All the sealers evaluated had low and similar voids, even after immersion in distilled water or PBS. (AU)

FAPESP's process: 17/14305-9 - Evaluation of new substances for root canal irrigation and calcium silicate-based endodontic sealers
Grantee:Juliane Maria Guerreiro Tanomaru
Support type: Regular Research Grants
FAPESP's process: 16/00321-0 - Development of new methodologies using micro-CT for evaluation of physicochemical properties of repair materials and endodontic sealers
Grantee:Fernanda Ferrari Esteves Torres
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 17/19049-0 - Evaluation of the root canal treatment procedures, physicochemical and biological properties of tricalcium silicate-based materials
Grantee:Mario Tanomaru Filho
Support type: Regular Research Grants